Weather strip



Patented Apr. 6, 1937 PATENT OFFICE WEATHER STRIP Edward W. Lapworth, Dorchester, Mass.

Application January 4,

2 Claims.

This invention relates to window constructions, more particularly to a unit combining in a single member the stop and parting beads and the weather strip of a window casing.

Usually the weather strip is separate from the stop and parting beads. This is especially true of a wooden casing.

My combination unit is made of some indestructible material, as metal of the proper gauge,

and is particularly intended for installations where the usual wooden stop and parting beads are subjected to rough and destructive usage and where window glass breakage is excessively high.

As typical of such installations mention is made of institutions for the confinement of the mentally deficient and penal institutions. Experience has shown that the inmates of such institutions persist in splintering off the usual wooden stop and parting beads until the same can be entirely ripped away. They also frequently smash the window glass.

In either instance replacement is necessary, and for this purpose the institutions maintain a crew of men made up of some of the inmates, plus possibly an experienced mechanic whose time is largely spent in replacing broken window glass and damaged casings.

In making such replacements, it sometimes happens that the repair crew either carelessly 30 fails to replace the usual weather strip, which being separate from the stop and parting beads is easily overlooked, or badly damages such weather strip in removing it from the casing.

My combination unit avoids these objections,

35 while afiording certain new and Worth-while advantages. Chief among these is that the unit is of metal and hence cannot be splintered or broken by the inmates. This eliminates the necessity for frequent replacement of the stop or 40 parting beads, as was true of wooden structures.

Another advantage is that being a one-piece unit, the danger either of damaging the weather strip when removing the unit or of forgetting to replace the same is avoided. The unit is applied and removed as a unit and in the minimum time and with the minimum efiort. This enables the use of cheaper labor which is a factor of real saving where window glass breakage is high.

And finally, my unit presents a smooth finished 5O inside surface which is devoid of rough or sharp edges on which the inmates may injure themselves.

In the accompanying drawing, wherein I have illustrated a preferred embodiment of my inven- 55 tion 1937, Serial No. 118,958 (01. -69) Fig. 1 is a side elevation of my combination unit, removed.

Fig. 2 is a vertical section through a conventional window casing showing my unit in applied position.

Fig. 3 is a partly sectionalized fragmentary perspective of the installation, and

Fig. 4 is a fragmentary detail in sectionalized perspective.

I have designated my unit generally as l0, and shown it as screwed or otherwise detachably fastened at H to the window casing l2 between the bottom sill l3 and the top member I4 thereof. So applied, it takes the place of the usual stop and parting beads and separate weather strip of the usual wooden casing.

My unit consists of a channel member of the proper length to fit the casing to which it is to be applied. It is preferably made of some indestructive material, as metal of the proper gauge, and is preferably non-corrosive.

The blank constituting the member ID is bent to provide a hollow stop bead l5 and a hollow parting bead l6 at its two opposite lateral edges. Between said edges, it provides a way I! within which slides the adjacent rail l8 of the lower sash, said way being bent inwardly and thence outwardly to provide the reversely-bent tonguelike weather strip element H! which is adapted to fit within the usual groove 20 of the sash rail l8.

As best shown in Fig. 4, the respective lateral edges of the blank are inturned at any desired angle, as indicated at 2|, and embedded within stiffening cores or filler strips 22 and 23 enclosed respectively by the stop and parting beads.

As also illustrated in said figure, the reverselybent weather strip I9 is so bent as to ofier a certain spring friction to the side walls of the groove 20 so as to insure a proper fitting and sealing of the parts.

Where the usual sash pulley and chain are located intermediate 01 the height of the lower sash so as to be inaccessible to the inmates of the institution, the unit In is slotted as at 24, Fig. 1 to permit the chain to be passed therethrough.

The lower edge of the unit In is stepped as indicated at 25, Fig. 1, to fit snugly over the sill and stool of the window casing.

The unit is applied by simply screwing it in the position shown in Fig. 1. In removing it, the screws are withdrawn and the unit pushed slightly upwardly and simultaneously swung inwardly away from the casing to enable it to clear the header of the window.

Although the stop and parting beads and their stiifening cores are here shown as of rectangular cross-section, they may be of any desired section. Similarly as to the section of the weather strip element, although the section illustrated is considered desirable as furnishing good spring friction.

Various other modifications in. materials, shapes, and uses may obviously be resorted to within the spirit and scope of my invention a defined by the appended claims.

What I therefore claim and desire to secure by Letters Patent is:--

1. A one-piece sash guide unit for windows,

said unit being formed from a single strip of sheet metal and comprising, in cross section; an

intermediate portion and hollow stop and parting beads extending forwardly from opposite sides of said intermediate p'ortion, respectively, the rear face of said intermediate portion and the rear faces of said stop and parting beads being disposed relatively to each other to lie flatly against the side of a window frame, the free side edge EDWARD W. LAPWORTI-I. 

